mysql 协议的statistics命令包及解析
程序员文章站
2022-04-14 21:37:24
...
git
https://github.com/sea-boat/mysql-protocol
概况
mysql客户端通过statistics命令查询服务端内部统计。
mysql通信报文结构
类型 | 名字 | 描述 |
---|---|---|
int<3> | payload长度 | 按照the least significant byte first存储,3个字节的payload和1个字节的序列号组合成报文头 |
int<1> | 序列号 | |
string | payload | 报文体,长度即为前面指定的payload长度 |
statistics命令包
Payload
1 [09] COM_STATISTICS
更多详情 : http://dev.mysql.com/doc/internals/en/com-statistics.html
statistics命令包类
/** * * <pre><b>statistics command packet.</b></pre> * @author * <pre>seaboat</pre> * <pre><b>email: </b>849586227@qq.com</pre> * <pre><b>blog: </b>http://www.php.cn/;/pre> * @version 1.0 * @see http://www.php.cn/ */public class StatisticsPacket extends MySQLPacket { public byte payload; @Override public int calcPacketSize() { return 1; } @Override protected String getPacketInfo() { return "MySQL Statistics Packet"; } @Override public void read(byte[] data) { MySQLMessage mm = new MySQLMessage(data); packetLength = mm.readUB3(); packetId = mm.read(); payload = mm.read(); } @Override public void write(ByteBuffer buffer) { int size = calcPacketSize(); BufferUtil.writeUB3(buffer, size); buffer.put(packetId); buffer.put(COM_STATISTICS); } }
以上就是mysql 协议的statistics命令包及解析的内容,更多相关内容请关注PHP中文网(www.php.cn)!